Brand: Ozar Product Code: Ozar-ABB-0797 Product Name: Ozar Double Ended Boring Bar - ABB-0797 Machined from selected steel for greater strength and rigidity. Broached holes to accept standard high speed steel and carbide tool bits. Black oxide finish. Bars have one end 45 Degree and other 90 Degree . Diameter Of Bar: 1 Inch Bit Size: 5/16 Inch Length: 12 Inch